My "Annie" 4-6-0 from the East Tennessee & Western North Carolina has developed severe arthritis, or something.  I have gotten into the insides of several (most of) my engines without major difficulty. results are always dependent on parts availability and other things.
I hope there is someone from Bachmann, or not, who can tell me what parts I should order. The engine is in fine shape except for the lack of power.   Has anyone replaced the main gears in an "Annie" who could advise me?

When my Annie 4-6-0 tries to make it all the way around the layout, running light, but stalls at the far end, it's time for serious repair.  I think the motor gearing has slipped out of alignment, or just worn out, based on the whirring sound I hear  :-\Is this something that will require a trip back to Bachmann or should I just order new parts?  If the latter, which parts are most likely suspect?
If I opt to let the "Bachman" do this job, would I need to get a return authorization first?

Do I need to ask for a return matrial Authorization before sending my 4-6-0 Connie in for repair?